I apologize for the noise, then!
As a matter of fact there is no official ocrfeeder release newer than the one in manjaro right now (as it was observed), but a simple patch can fix the issue.
In /usr/lib/python3.10/site-packages/ocrfeeder/studio/studioBuilder.py change add_engines_dialog = widgetPresenter.SystemEnginesDialog(engines) into add_engines_dialog = widgetPresenter.SystemEnginesDialog(self.main_window, engines)
I understand that manjaro and arch do not patch downstream. Some users might find this info useful, though.